I'm pretty sure no one does it on purpose and goes to a decision!?!?!? Not even Shields,Fitch or GSP. Im sure if they had the opportunity to finish they would.

Bah, you've not been watching a lot of the most recent fights then. There are plenty of examples to be had of fighters playing it safe and not minding that they are just scoring more points and letting it go to the judges. Watch more fights, then criticize.